<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>404页面</title>
    <style>
        h1{
            color: red;
            width: 90%;
            height: 90%;
        }
    </style>
</head>
<body class="text-center"
      background="/img/school2.jpg"
      style="background-repeat:no-repeat;
      background-size:cover;
	  background-attachment: fixed;">
<h1> 能看到这张图片 恭喜你  看到你期待的 404了  </h1>
</body>
</html>